nav {
  height: 34px;
  line-height: 33px;
  background-color: #fff;
  border-bottom: 1px solid #F0F0F0;
  .w>ul {
    height: 33px;
    >li {
      float: right;
      color: #999999;
      cursor: pointer;
      span.title a {
        color: #999999;
      }
      &:hover {
        span.title,
        span.title a {
          color: $color;
        }
        .aboutus-menu {
          display: block;
        }
      }
      i.arrow {
        font-size: 10px;
        vertical-align: middle;
        margin-left: 5px;
      }
      i.index {
        @include setbgimg(10px, 12px, '../../static/images/base/index.png');
        margin-right: 5px;
        margin-top: 10px;
      }
      i.shop {
        @extend .index;
        @include setbgimg(10px, 12px, '../../static/images/base/shop.png');
      }
      >.aboutus-menu {
        position: absolute;
        z-index: 999;
        right: 30px;
        display: none;
        width: 960px;
        padding: 32px 0;
        background-color: #fff;
        box-shadow: 0 1px 3px rgba(0,0,0, .5);
        >ul.aboutUs {
          >li {
            float: left;
            width: 160px;
            padding-left: 40px;
            dl {
              dt {
                position: relative;
                font-size: 14px;
                color: #000;
                margin-bottom: 15px;
                &::before {
                  content: '';
                  position: absolute;
                  left: 0;
                  bottom: 0;
                  width: 30px;
                  height: 2px;
                  background-color: #999999;
                }
              }
              dd {
                line-height: 30px;
                color: #5A5D5A;
                &:hover {
                  color: $color;
                }
              }
            }
          }
        }
        .copyright {
          position: relative;
          margin-top: 25px;
          padding: 0 32px;
          text-align: center;
          padding-top: 40px;
          &::before {
            content: '';
            position: absolute;
            top: 20px;
            left: 50%;
            transform: translateX(-50%);
            width: 860px;
            height: 2px;
            background-color: #F0F0F0;
          }
          .title {
            position: absolute;
            top: 0;
            left: 50%;
            transform: translateX(-50%);
            width: 300px;
            background-color: #fff;
            line-height: 40px;
            height: 40px;
            z-index: 10;
          }
          ul.tlicense {
            line-height: 26px;
            li {
              display: inline-block;
            }
          }
          ul.blicense {
            line-height: 26px;
            li {
              display: inline-block;
            }
          }
        }
      }
    }
    >li.line {
      margin: 0 20px;
    }
  }
}